A vehicle mechanism with chassis lifting

Abstract

The present invention discloses a vehicle mechanism with a liftable chassis, which includes a vehicle frame, a central shaft, in-wheel motors, wheels, a connecting frame, a hydraulic telescopic rod, a locking device, a mobile suspension system, a connecting frame hinge, and a half shaft. The liftability of the chassis is achieved by setting the hydraulic telescopic rod, the connecting frame, the connecting frame hinge, and the central shaft. The telescopic movement of the hydraulic telescopic rod drives the connecting frame to rotate around the central shaft through the connecting frame hinge, changing the angle between the connecting frames on the same side, and thus lifting or lowering the chassis. The mobile suspension system includes a lower base of the suspension spring, a suspension spring, an upper base of the suspension spring, a suspension telescopic rod, a slider, and a sliding track. When the chassis is lifted or lowered, the slider of the mobile suspension system can slide in the sliding track. The vehicle travels by setting the in-wheel motors, the wheels, and the half shaft. The in-wheel motor and the half shaft rely on a key connection, and the end of the half shaft is fixedly connected to the wheel through a threaded connection. The present invention realizes the liftability of the vehicle chassis and improves the vehicle's ability to pass through complex road conditions.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle chassis systems, in particular to a vehicle mechanism with a liftable chassis. Background Art

[0002] The technology of vehicle chassis lifting is a hot topic in the current research of vehicle chassis system technology. At present, some high-end cars can achieve chassis lifting through variable suspension, but the lifting distance is generally limited, and the vehicle's ability to pass complex road conditions needs to be improved. At the same time, some other related technologies for realizing the lifting of vehicle chassis have been proposed. For example: Application No.: CN201521096295.3, chassis lifting scooter, the utility model includes a frame and four wheels, a wheel bracket arranged between the frame and the wheels, and two adjustment components located in front and rear of the frame. The adjustment component includes a support, a central axis, two symmetrically arranged adjustment rods and two connecting rods. The support is fixed to the frame and is provided with a vertical guide groove. By setting a support and an adjusting rod, the adjusting rod is pivotally connected to the support, so that the adjusting rod can swing, and the adjusting rod is connected to the wheel bracket through a connecting rod. When the adjusting rod is driven to swing, the wheel bracket can be driven to swing up and down through the connecting rod, so that the wheel moves up or down; in addition, by setting a vertical guide groove on the support, setting a sliding long hole on the adjusting rod, and connecting the adjusting rods together using the middle axis, the middle axis is used to simultaneously control the two wheels to move up or down at the same time, so that the chassis can be lowered or raised relative to the ground, and the purpose of lifting the chassis of the scooter is achieved. The method of realizing chassis lifting of the utility model is obviously different from the present invention. Application number: CN202010598142.8, a bridge drive unit and a car lifting bridge based on the bridge drive unit, the invention drives the bevel gears in the axle boxes on both sides by setting a basin gear on the main half-axle, so that the transmission shaft connected to the bevel gear in the axle box drives the half-axle through the transmission assembly, thereby rotating the universal joint and the wheel hub. The two axle boxes are hinged to each other and rotatably connected to the main half-axle, so they can rotate around the main half-axle and are provided with a locking mechanism. The telescopic mechanism is arranged on one side of the axle box and can push the axle box to rotate, thereby lowering the vehicle chassis and improving the obstacle crossing ability. This invention belongs to the technical field of drive axles and is obviously different from the present invention, and this invention does not explain the problem of vehicle suspension placement.

[0003] The present invention provides a vehicle mechanism with a chassis lift. By setting a central shaft, a connecting frame, a hydraulic telescopic rod, a locking device, and a connecting frame hinge, relying on the telescopic movement of the hydraulic telescopic rod to drive the connecting frame hinged thereto, the connecting frame rotates around the central shaft through the connecting frame hinge, changing the angle between two groups of connecting frames on the same side, thereby changing the height of the vehicle chassis and improving the vehicle's ability to pass through complex road conditions; by setting a mobile suspension system, the problem of realizing the vehicle suspension function at different chassis heights when the connecting frame rotates around the central shaft through the connecting frame hinge is solved; by setting wheel-side motors to drive the wheels, compared with other common wheel drive methods, most of the transmission parts are reduced, and the energy loss is reduced. Summary of the Invention

[0004] The present invention aims to provide a vehicle mechanism with a chassis lift, enabling the chassis height to be lifted and lowered, improving the vehicle's ability to pass through complex road conditions, and simultaneously solving the problems of how to drive the wheels and how to arrange the suspension system after the chassis is lifted.

[0005] The purpose and efficacy of a vehicle mechanism with a chassis lift according to the present invention are achieved by the following specific technical means.

[0006] A vehicle mechanism with a chassis lift includes a vehicle frame, a central shaft, wheel-side motors, wheels, connecting frames, hydraulic telescopic rods, locking devices, mobile suspension systems, connecting frame hinges, and half shafts.

[0007] The vehicle frame plays a role in support and connection. Four groups of sliding tracks are provided on both sides of the vehicle frame; the middle and lower parts on both sides of the vehicle frame are welded and fixed to the upper side housing of the connecting frame hinge.

[0008] Further, both ends of the central shaft pass through the central holes of the outer shells on both sides of the connecting frame hinge and the connecting holes of the connecting frame.

[0009] Further, both ends of the hydraulic telescopic rod are hinged to the connecting frame. When the hydraulic telescopic rod expands and contracts, it can drive the connecting frame to rotate around the central shaft through the connecting frame hinge, changing the angle between two groups of connecting frames on the same side, thereby changing the height of the vehicle chassis; the hydraulic telescopic rod can self-lock. When the hydraulic telescopic rod expands or contracts to the required length, the hydraulic telescopic rod will self-lock and no longer change its length.

[0010] Further, the wheel-side motors are placed inside the wheels and are connected to the half shafts by keys; the wheels are fixedly connected to the ends of the half shafts by threaded connections.

[0011] Further, a connection hole and nine evenly distributed secondary positioning pin holes are provided at the top of the connection frame. The connection hole can allow the central shaft to pass through. The number of connection frames is set to four groups, which are placed on both sides of the bottom surface of the vehicle frame. The number on each side is set to two groups, and the two connection frames on the same side are hinged through a connection frame hinge. A half shaft connection hole is provided at the lower end of the connection frame. A suspension spring lower base is welded at a position slightly below the middle of the upper side of the connection frame.

[0012] Further, the locking device is located outside the outer shells on both sides of the connection frame hinge. The locking device is provided with positioning pins. The number of positioning pins is set to three groups, which are arranged in a triangle. When the hydraulic telescopic rod is self-locked after expansion and contraction, the positioning pins pass through the main positioning pin holes on the outer shells on both sides of the connection frame hinge and the secondary positioning pin holes on the connection frame, locking the two connection frames on the same side.

[0013] The mobile suspension system includes a suspension spring lower base, a suspension spring, a suspension spring upper base, a suspension telescopic rod, a slider and a sliding track. The suspension spring lower base of the mobile suspension system is welded and fixed at a position slightly below the middle of the upper side of the connection frame. The suspension spring is vertically placed between the suspension spring lower base and the suspension spring upper base. Both ends of the suspension telescopic rod are vertically welded and fixed to the suspension spring upper base and the slider respectively. Two groups of suspension telescopic rods are provided for each group of mobile suspension systems. The lower part of the slider is strip-shaped, and the upper part is a cylindrical protrusion. The slider passes through the sliding track and is positioned by the suspension telescopic rods on both sides to prevent the slider from sliding in the direction perpendicular to the sliding track. There are circular grooves on the upper surface of the sliding track. The number of circular grooves is two groups and they are located at both ends of the upper surface of the sliding track. When the cylindrical protrusion on the upper part of the slider slides to the position of the circular groove on the sliding track, the suspension telescopic rod elongates, and the cylindrical protrusion on the upper part of the slider will fall into the circular groove on the sliding track, and the circular groove will limit the continued sliding of the slider.

[0014] Further, the connection frame hinge is provided with an upper side shell and two side shells. The upper side shell is an arc-shaped plate, and the two side shells are circular plates. The upper side shell and the two side shells are welded to form a cavity that can accommodate the connection frame. The two side shells of the connection frame hinge are provided with coaxial central holes and nine evenly distributed main positioning pin holes.

[0015] Further, the half shaft is installed in the half shaft connection hole at the lower end of the connection frame by bearings and drives the wheels to rotate.

[0016] Compared with the prior art, the present invention has the following beneficial effects.

[0017] By providing a hydraulic telescopic rod, the chassis has the function of being liftable. The expansion and contraction of the hydraulic telescopic rod causes the two connection frames on the same side to rotate around the central shaft through the connection frame hinge, changing the angle between the two connection frames, and further changing the height of the vehicle chassis, improving the vehicle's ability to pass through complex road conditions.

[0018] A vehicle mechanism with a liftable chassis. Since the chassis is liftable, when the chassis is raised, a large amount of space will be vacated under the chassis. This structure can be used in household vehicles to install a storage rack under the chassis to store luggage; for special vehicles, such as rescue vehicles, by raising the chassis of the rescue vehicle to a height higher than that of ordinary household vehicles, when the space under the chassis is sufficient for an ordinary household vehicle to pass through, the rescue vehicle can raise the chassis through this vehicle mechanism with a liftable chassis so that it can pass over the household vehicle and pass through the traffic congestion section faster.

[0019] By setting up in-wheel motors to drive the wheels, compared with common wheel drive methods, most of the transmission parts are reduced, and the loss is reduced.

[0020] By setting up a mobile suspension system, the problem of installing the vehicle suspension at different chassis heights is solved, and the function of the vehicle suspension at different chassis heights is ensured. Brief Description of the Drawings

[0021] Figure 1 This is a three-dimensional structural schematic diagram of a vehicle mechanism with a liftable chassis according to the present invention.

[0022] Figure 2 This is a three-dimensional structural schematic diagram of the connecting frame hinge of a vehicle mechanism with a liftable chassis according to the present invention.

[0023] Figure 3 This is a three-dimensional structural schematic diagram of the connecting frame of a vehicle mechanism with a liftable chassis according to the present invention.

[0024] Figure 4 This is an assembly schematic diagram of the locking device of a vehicle mechanism with a liftable chassis according to the present invention.

[0025] In the figure, the corresponding relationship between the component names and the drawing reference numbers is as follows.

[0026] In the figure, 1, vehicle frame; 2, central shaft; 3, in-wheel motor; 4, wheel; 5, connecting frame; 6, hydraulic telescopic rod; 7, locking device; 8, mobile suspension system; 9, connecting frame hinge; 10, half shaft; 51, connecting hole; 52, half shaft connecting hole; 53, secondary positioning pin hole; 71, positioning pin; 81, lower base of suspension spring; 82, suspension spring; 83, upper base of suspension spring; 84, suspension telescopic rod; 85, slider; 86, sliding track; 91, upper side housing; 92, both side housings; 93, central hole; 94, main positioning pin hole. Detailed Description of the Embodiment

[0027] Embodiment, as shown in the attached Figure 1 to the attached Figure 4 figures.

[0028] The present invention provides a vehicle mechanism with a chassis lift, including a vehicle frame 1, a central shaft 2, a wheel side motor 3, a wheel 4, a connecting frame 5, a hydraulic telescopic rod 6, a locking device 7, a mobile suspension system 8, a connecting frame hinge 9, and a half shaft 10.

[0029] Wherein, sliding tracks 86 are arranged on both sides of the vehicle frame 1; the middle and lower parts on both sides of the vehicle frame 1 are fixedly welded to the upper side housing 91 of the connecting frame hinge 9.

[0030] Wherein, both ends of the central shaft 2 pass through the central holes 93 of the outer shells 92 on both sides of the connecting frame hinge 9 and the connecting holes 51 of the connecting frame 5, enabling the connecting frame 5 to rotate around the central shaft 2.

[0031] Wherein, both ends of the hydraulic telescopic rod 6 are hinged to the connecting frame 5. When the hydraulic telescopic rod 6 expands and contracts, it can drive the connecting frame 5 to rotate around the central shaft 2 through the connecting frame hinge 9, changing the included angle between the two groups of connecting frames 5 on the same side, and further changing the height of the vehicle chassis; the hydraulic telescopic rod 6 can self-lock. When the hydraulic telescopic rod 6 expands and contracts to the required length, the hydraulic telescopic rod 6 locks itself and no longer changes its length.

[0032] Wherein, the wheel side motor 3 is placed inside the wheel 4 and is connected to the half shaft 10 by a key; the wheel 4 is fixedly connected to the end of the half shaft 10 by a threaded connection.

[0033] Wherein, the top end of the connecting frame 5 is provided with a connecting hole 51 and nine evenly distributed secondary positioning pin holes 53. The connecting hole 51 can allow the central shaft 2 to pass through; the number of connecting frames 5 is set to four groups, placed on both sides of the bottom surface of the vehicle frame 1, with two groups on each side. And the two groups of connecting frames 5 on the same side are hinged through the connecting frame hinge 9; the lower end of the connecting frame 5 is provided with a half shaft connecting hole 52; a suspension spring lower base 81 is welded at a position slightly below the middle of the upper side of the connecting frame 5.

[0034] Wherein, the locking device 7 is located outside the outer shells 91 on both sides of the connecting frame hinge 9; the locking device 7 is provided with positioning pins 71, and the number of positioning pins 71 is set to three groups, arranged in a triangular pattern. When the hydraulic telescopic rod 6 expands and contracts and self-locks, the positioning pins 71 pass through the main positioning pin holes 94 on the outer shells 92 on both sides of the connecting frame hinge 9 and the secondary positioning pin holes 53 on the connecting frame 5, locking the two groups of connecting frames 5 on the same side.

[0035] Among them, the mobile suspension system 8 includes a lower base 81 of the suspension spring, a suspension spring 82, an upper base 83 of the suspension spring, a suspension telescopic rod 84, a slider 85 and a sliding track 86; the lower base 81 of the suspension spring of the mobile suspension system 8 is welded and fixed at a position slightly below the middle of the upper side of the connecting frame 5; the suspension spring 82 is vertically placed between the lower base 81 of the suspension spring and the upper base 83 of the suspension spring; both ends of the suspension telescopic rod 84 are perpendicularly welded and fixed to the upper base 83 of the suspension spring and the slider 85 respectively, and two groups of suspension telescopic rods 84 are provided for each group of mobile suspension systems 8; the lower part of the slider 85 is strip-shaped, and the upper part is a cylindrical protrusion. The slider 85 passes through the sliding track 86 and is positioned by the suspension telescopic rods 84 on both sides to prevent the slider 85 from sliding in the direction perpendicular to the sliding track 86; the upper surface of the sliding track 86 has circular grooves, and the number of circular grooves is two and they are located at both ends of the upper surface of the sliding track 86. When the cylindrical protrusion on the upper part of the slider 85 slides to the position of the circular groove of the sliding track 86, the suspension telescopic rod 84 elongates, and the cylindrical protrusion on the upper part of the slider 85 will fall into the circular groove of the sliding track 86, and the circular groove will limit the continued sliding of the slider 85.

[0036] Among them, the connecting frame hinge 9 is provided with an upper side housing 91 and two side housings 92. The upper side housing 91 is an arc-shaped plate, and the two side housings 92 are circular plates. The upper side housing 91 and the two side housings 92 are welded to form a cavity that can accommodate the connecting frame 5; the two side housings 92 of the connecting frame hinge 9 are provided with coaxial central holes 93 and nine evenly distributed main positioning pin holes 94.

[0037] Among them, the half shaft 10 is installed in the half shaft connection hole 52 at the lower end of the connecting frame 5 by using bearings and drives the wheel 4 to rotate.

[0038] Specifically, when the chassis needs to be lifted or lowered, in the preparation stage, the locking device 7 needs to be manually removed, so that the positioning pin 71 on the locking device 7 disengages from the main positioning pin holes 94 on the two outer shells 92 of the connecting frame hinge 9 and the secondary positioning pin holes 53 on the connecting frame 5. At this moment, the hydraulic telescopic rod 6 is still in the self-locking state; when the chassis is lifted or lowered, the hydraulic telescopic rod 6 cancels the self-locking. The suspension telescopic rod 84 shortens, so that the upper cylindrical protrusion of the slider 85 leaves the circular groove at one end of the upper surface of the sliding track 86, enabling the slider 85 to slide along the sliding track 86. The hydraulic telescopic rod 6 expands and contracts, driving the connecting frame 5 to rotate around the central axis 2 through the connecting frame hinge 9, changing the angle between the two groups of connecting frames 5 on the same side, and thus changing the height of the vehicle chassis. When the connecting frame 5 rotates around the central axis 2 through the connecting frame hinge 9, the lower suspension spring base 81 welded on the connecting frame 5 drives the moving suspension system 8 to move in a way that the slider 85 slides in the sliding track 86. When the hydraulic telescopic rod 6 expands and contracts by a certain length and the angle between the two groups of connecting frames 5 on the same side changes by a certain angle, the hydraulic telescopic rod 6 locks itself and the upper cylindrical protrusion of the slider 85 slides to the position of the circular groove at the other end of the sliding track 86. The suspension telescopic rod 84 extends, and the upper cylindrical protrusion of the slider 85 will fall into the circular groove at the other end of the sliding track 86, and the circular groove will limit the continuous sliding of the slider 85. After the chassis lifting or lowering is completed, the locking device 7 is manually installed, and the positioning pin 71 passes through the main positioning pin holes 94 on the two outer shells 92 of the connecting frame hinge 9 and the secondary positioning pin holes 53 on the connecting frame 5 to lock the two groups of connecting frames 5 on the same side.

[0039] Specifically, the in-wheel motor 3 is placed inside the wheel 4 and is connected to the half shaft 10 by a key; the wheel 4 is fixedly connected to the end of the half shaft 10 by a threaded connection. The half shaft 10 is installed in the half shaft connection hole 52 at the lower end of the connecting frame 5 by bearings and can drive the wheel 4 to rotate.

Claims

1. A vehicle mechanism with a liftable chassis, characterized in that: It includes a vehicle frame (1), a central shaft (2), in-wheel motors (3), wheels (4), a connecting frame (5), a hydraulic telescopic rod (6), a locking device (7), a mobile suspension system (8), a connecting frame hinge (9), and a half shaft (10); Sliding tracks (86) are provided on both sides of the vehicle frame (1); The middle and lower parts on both sides of the vehicle frame (1) are fixedly welded to the upper side housing (91) of the connecting frame hinge (9); Both ends of the central shaft (2) pass through the central holes (93) of the two side housings (92) of the connecting frame hinge (9) and the connecting holes (51) of the connecting frame (5); Both ends of the hydraulic telescopic rod (6) are hinged to the connecting frame (5). When the hydraulic telescopic rod (6) expands and contracts, it can drive the connecting frame (5) to rotate around the central shaft (2) through the connecting frame hinge (9), changing the angle between the two sets of connecting frames (5) on the same side, thereby changing the height of the vehicle chassis; The hydraulic telescopic rod (6) can be self-locked. When the hydraulic telescopic rod (6) expands and contracts to the required length, the hydraulic telescopic rod (6) will no longer change its length after self-locking; The mobile suspension system (8) includes a suspension spring lower base (81), a suspension spring (82), a suspension spring upper base (83), a suspension telescopic rod (84), a slider (85), and a sliding track (86); The suspension spring lower base (81) is fixedly welded to the middle and lower position on the upper side of the connecting frame (5); The suspension spring (82) is vertically placed between the suspension spring lower base (81) and the suspension spring upper base (83); Both ends of the suspension telescopic rod (84) are perpendicularly welded and fixed to the suspension spring upper base (83) and the slider (85) respectively. Two sets of suspension telescopic rods (84) are provided for each set of mobile suspension systems (8); The lower part of the slider (85) is strip-shaped, and the upper part is a cylindrical protrusion. The slider (85) passes through the sliding track (86) and is positioned by the two side suspension telescopic rods (84) to prevent the slider (85) from sliding in the direction perpendicular to the sliding track (86); There are circular grooves on the upper surface of the sliding track (86). The number of circular grooves is two and they are located at both ends of the upper surface of the sliding track (86). When the upper cylindrical protrusion of the slider (85) slides to the position of the circular groove of the sliding track (86), the suspension telescopic rod (84) elongates, and the upper cylindrical protrusion of the slider (85) will sink into the circular groove of the sliding track (86), and the circular groove will limit the continued sliding of the slider (85).

2. The vehicle mechanism with a liftable chassis according to claim 1, characterized in that: The in-wheel motor (3) is placed inside the wheel (4) and is connected to the half shaft (10) by a key; The wheel (4) is fixedly connected to the end of the half shaft (10) by a threaded connection.

3. The vehicle mechanism with a liftable chassis according to claim 1, characterized in that: The top of the connecting frame (5) is provided with a connecting hole (51) and nine evenly distributed secondary positioning pin holes (53). The connecting hole (51) can allow the central shaft (2) to pass through. The number of connecting frames (5) is set to four groups, which are placed on both sides of the bottom surface of the vehicle frame (1), with two groups on each side. And the two groups of connecting frames (5) on the same side are hinged through a connecting frame hinge (9). The lower end of the connecting frame (5) is provided with a half shaft connecting hole (52). A suspension spring lower base (81) is welded at a position slightly below the middle of the upper side of the connecting frame (5).

4. The vehicle mechanism with a liftable chassis according to claim 1, characterized in that: The locking device (7) is located outside the outer shells (91) on both sides of the connecting frame hinge (9). The locking device (7) is provided with positioning pins (71), and the number of positioning pins (71) is set to three groups, arranged in a triangular pattern. When the hydraulic telescopic rod (6) completes self-locking during expansion and contraction, the positioning pins (71) pass through the main positioning pin holes (94) on the outer shells (92) on both sides of the connecting frame hinge (9) and the secondary positioning pin holes (53) on the connecting frame (5), locking the two groups of connecting frames (5) on the same side.

5. The vehicle mechanism with a liftable chassis according to claim 1, characterized in that: The connecting frame hinge (9) is provided with an upper shell (91) and two side shells (92). The upper shell (91) is an arc-shaped plate, and the two side shells (92) are circular plates. The upper shell (91) and the two side shells (92) are welded to form a cavity capable of accommodating the connecting frame (5). The two side shells (92) of the connecting frame hinge (9) are provided with coaxial central holes (93) and nine evenly distributed main positioning pin holes (94).

6. The vehicle mechanism with a liftable chassis according to claim 1, characterized in that: The half shaft (10) is installed in the half shaft connecting hole (52) at the lower end of the connecting frame (5) by using bearings and drives the wheel (4) to rotate.

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